Since a couple of weeks, I have a problem with my laptop screen. From time to time, suddenly, everything on the screen disappears and I get a screen with only white and grey lines (see picture attached). When this happens, I can't use the laptop anymore and I have to shutdown by pressing the power button. On some days, I have no problems, on other days, this happens several times.

I restarted my computer due to running slowly, when it was starting back up, it prompted me to either "Run Startup Repair - recommended" or "Start Windows Normally." When opting the latter, the screen would go black, then go back to the same prompt. When selecting the startup repair, the screen goes to a blue screen with squiggly white lines with a hummingbird and a branch on it (wtf?!) and stays there for a long, long time.

I have Windows 7 32 bit on a CD. I started to install it, I had a bar with: checking files, than windows logo and a small bar, than it should be a window with language selection, but it did't appear! Instead I saw only the blue background. Also ther's no mouse. I tried to do it agian, but I didn't walk, too. What should I do?

I start up my computer, the bios runs as normal detecting drives etc. then it gets to "loading operating system..", from here it either stays that way or changes to a screen with horizontal blue lines and if you wait a little longer still, other colored lines appear aside these blue lines. This all happens at the top of the monitor.I have tried to restart my PC several times and the same thing happens with these lines. I have also tried changing monitors, unplugging all inputs. Nothing.

HP Laptop running windows 7 every now and again, (not very often) the screen will fill with zigzag lines. Theres nothing else on the screen, i have to reboot the laptop and then it starts up fine. laptop was running Vista and it happened then aswell. It can happen while playing vdeos or just surfing the net.

I have been using my emachines netbook 350 for a year now and running windows7 in it since I bought. A month ago, I've started seeing those blinking horizontal lines on my screen. Almost half of my screen is affected. I wonder if it is a problem with my video card or just some viruses. Well when I print screen, the lines are not showing. The same as when I connect my netbook to a projector

After trying a full list of things; 2 different monitors 2 different VGA cables 3 different mice 3 different keyboards change power supply change graphics card used onboard graphics switched ram sticks and removed one at a time reformatted a dozen of times unplugged all sound from computer checked motherboard for any visual problems and couldn't see any updated all drivers I could possibly think of Ran Memtest for 7 passes with no errors I've finally found out the problem and that was when I connected my graphics card using HDMI to a HDMI compatable monitor it worked fine and I had no more lines!

So it seems that using HDMI is working fine but soon as I use a VGA cable its not working and the lines are back. It only confused me more when I connected a VGA cable from another computer to the monitor it all worked fine.

As far as I can tell it's something to do with my computers VGA/HDMI settings, I've tried onboard VGA and that still didn't work so it doesn't seem to be a graphics card problem just something is stopping VGA working properly but HDMI is working.

I'm gonna have to go buy an expensive new monitor with HDMI compatability.

I don't have the model on me now, but recently I worked on a Compaq Desktop computer. At random times (could be any program open), it would go to a grey screen with weird horizontal lines. I upgraded the video drivers, ran a video stress test and it went over 2 hours with no problems.

The customer just reported to me that it happened again so I am thinking that maybe it is a faulty motherboard (video built onto motherboard). What do you guys think? I didn't wanna give the customer the run around saying "Let's try 1) putting in a new video card then 2) lets try reformatting and lastly 3) lets replace the motherboard)"

From the first couple of days I noticed an issue that looked like incorrectly setup refresh rates - there are wavy lines accross the entire screen, and is particularly noticeable on highlighted text and the side edges of windows. I made sure the frame rate was correct, both in Windows and according to the GFX Card. I have tried all the settings but have settled at 75hz. This is the best setting but does not get rid of the problem.

I have the most up to date drivers for my GFX Card and Windows 7 is up to date too.

The intensity of the problem can fluctuate. Right now, its fairly minimal and only visable if you are looking. It can however get to the point where its becoming hard to read text, or at least tiring because you have to strain some more. This can happen at any time. The only link I have found is to games, as both World of Warcraft and Borderlands will intensify the isse, both ingame and in Windows. I am fairly sure they are set at the correct resolution and refresh rate where possible.

What could this be?

Further info, three weeks ago I turned the PC on in the morning to find the 'power' button unresponsive. After some waiting and several attempts it eventually turned on but I got a 'no signal' display on screen. Later I resorted to jump starting the PC without the power button, using a screwdriver to connect the prongs - after doing this, the power button has been fine although it took another day for the no signal message to go away and normal viewing return. This problem has not repeated since.

During this the fans were fluctuating a lot, audibly so. This dissapeared mostly along with the above problems, but I still think it sounds like the fans are fluctuating infrequently, particularly on initial bootup. I have no software for changing fan speeds, as far as they know they run at the speed I set physically.

A lot of this seems to point at the GFX Card, although I am a little more inclined to think it is the power supply, or the availability of power for each unit. But I really don't know. Either I can find the solution online or I take it to the shop and pay for a repair, not that its easy to even tell them what they need to repair.

The PC runs fast and with relatively few crashes besides that one weekend and this persistant display problem.

ok almost 2 months ago my computer blinked came back on and said a display driver had crashed ans was succsesfully recovered,well from then on out my screen was weird looking with lines ,text would dissapear ,and it was like this for a long time,so the other day my screen blinked and when it came back on my whole screen was multi colored and i could not see my desktop at all, now i read that it was probably just my video card going out so i uninstalled it thinking that .and it did,,for about 10 minutes and it did it again..i know i dont want to hear windows registery error cause i have alot on my comp that i would have to have saved and i shiver at the thought of the price of that...i mean i cannot see anything at all just alot of colors in small thin lines,.this is a home built comp, but it was made by someone who has been makeing comps for years so he knows what he is doing...

horizontal faint lines when in full screen games. using d3doverider(bundled with rivatuner) calms it alot and makes it dissapear in alot of games. I upgraded from my 5870 which was fine to my new ATI 6990. tested it on several screens and it makes no difference. So V-Sync and triple buffer has a positive effect on calming it. Often have to force it with third party softwarerar a milder version of this that is harder to see.i'm convinced it's to do with the graphics card being too fast or ''too good' for the screen and the image somehow can't keep up which causes the lines. was thinking about getting a 100hz refresh rate. The Card is brand new and works(with lines ) anyone know any work arounds like other cables that work like

When I was using the computer just now, the screen just randomly blanked out and showed grey lines instead! I couldn't do anything with the machine, so I switched it off at the wall and restarted it. After a few minutes, the same thing happened again!

I changed the monitor for a spare one, and after about 20 minutes, the same thing happened!

i am having an issue with media center through my Xbox 360 i am using a VGA cable to my Xbox and running it through a monitor everything is fine when i'm playing games and what not but when i open media center it has weird lines across the screen i have tried everything i can think of, i changed the resolution and it didn't have lines but obviously the picture wasn't quite right, change the resolution back to normal and the lines come back.

My mom has a Compaq laptop. It has Windows 7. Yesterday, the screen randomly turned a blue-ish green color. The Google Chrome new tab page is where she first noticed. It's pretty much wherever there should be white, there's that funny color. When I restart it, the white Compaq "Q" logo is green instead of white. The "Starting Windows" text is green and the light inside of the Windows logo is green also.

I turned on my PC earlier on today and there was a white bars/lines on the screen throughout the bootup process. I'm unable to boot into windows as it hangs and goes into black screen after loading past the windows logo, however I'm able to boot into safe mode but still having the screen filled with white lines. I've tried system restore to no avail. I'm thinking its either the graphics card or the monitor.

I have a Acer Aspire 5542-1462 laptop, windows 7. One out of every 3 boot-ups the comp. freezes at the desktop with the screen shaking with long colored lines or short lines in a small area of the screen.

I'm attempting to upgrade from 32-bit Vista Home Premium to Windows 7. I used the 32-bit disk to avoid having to do a full clean install, but every time (4 tries so far) that I've done it, it will get to the last portion of the upgrade where it transfers over all the old documents and programs. At that point the screen turns into a weird pattern of diagonal lines. Sometimes they are white and blue lines 1 inch thick, other times they are really thin lines. The machine is fairly new and high-end for a Vista machine, so the graphics card should be perfectly. I've run the Upgrade Advisor and it only mentions a couple software issues such as iTunes which I can't see as prohibiting the upgrade.

one day it suddenly crashed while i was watching a movie. it displayed random patterns on screen. kinda like part of the image from the video is on the screen then a black strip and random colors. I restarted the unit to safe mode and left it on and browsed the net and downloaded some big files for how many hours and nothing happened.. there are also times when windows is still loading with the windows logo on screen, it crashes. there are also times when the login screen is displayed and it crashes. it just crashes randomly! so i tried to reformat it. i deleted the partitions and created a new one, formatted it then fresh installed windows 7 ( my previous OS is windows 7 by the way) and started installing the basic drivers and after a few hours, it crashed again...thinking that the driver installed might not be compatible, i tried another fresh install of windows (same execution, delete partition, create, install OS) and this time, without installing the drivers, it crashed again after a few hours... sometimes it crashes immediately after turning it on from cold start!

Blue screen and freezing. This is happening frequently but never has any regularity to it. Sometimes happens after a couple of days and sometimes after a couple of minutes. Also sometimes with only one browser window open and sometimes with 15 or more. Happens with both chrome and firefox. Has not happened with other programs as this lapy only gets used for surfing/email/forums etc. Sometimes happens while the computer is sitting idle right after boot. Very strange.

I'm assuming it's a BIOS driver problem, but i'll leave it up to you guys to tell me, you're the experts :P I also tried doing a system restore, but for whatever reason when I try it just says the restore is initializing and it sits on that screen and never does anything. I've left it for about an hour before and still nothing, not real sure what the problem is there either. Right now I'm running the laptop off safe mode with networking and it's working fine, hopefully it's just a driver problem I can fix.

I'm on Windows 7 32bit and let me know if you need any more information.

i have a windows 7x64.Yesterday while watching videos my screen started jumping and crashed to a blue screen with(QPR is not less or equal i think) and after that i restarted and it came with other errors.Now when i switch on the laptop it only shows black screen with no option to do anything.